Thermoforming is a manufacturing of plastic components through the vacuum and / or pressure forming processes. A simplistic overview of the single-sheet thermoforming process consists of heating an extruded sheet of plastic and either forming the sheet over a male mold or into a female mold. Depending on what type of mold a customer selects, the thermoforming process allows the customer the ability to receive a part with the same aesthetic properties as an injection-molded part at a fraction of the tooling expense involved in injection molding..